Illuminating and picture-projecting apparatus.



' M. MUCHA.

ILLUMINATING AND PICTURE PROJECTING APPARATUS.

' APPLICATION man m. l. 1913.

A TTORNEY.

A. IVI. MUCHA. ILLUMINATING ANI) PICTURE PROJECTING APPARATUS.

APPLICATION FILED APR. I, ISIS.

A.y M. MUCHA. ILLUMINATING AND PICTURE PROJECTING APPABATUS.

APPLICATION FILED' APR. I, I9I3- 1 l 87,43 l Patented June 13, 1916.

[NVE/WOR. 1w 6, W

ATTORNEY.

l f an sra f rafrnfnfr FFIQE.

ALPHONSE MARE MUCHA, OF ZBIROH, AUSTRIA-HUNGARY, ASSIGNOR 0F ONETHIRD T0 THOMAS A. OSHAUGHNESSY, 0F CHICAGO, ILLINOIS.

Specification of Letters Patent.

Patented June'13, 1916.

Application led April 1, `1913. Serial No. 753,247.

To all whom t may concern:

Be it known that I, ALPHONSE yMARIE MUCHA, a subject of the Emperor of Austria-Hungary, and resident of Zbiroh, Bohemia, Austria-Hungary, have invented a new and useful Illuminating and Picture- Projecting Apparatus, of which the following is a specification.

This invention relates to means for illuminating rooms and for applying at the same time changeable mural decorations to portions lof the walls or of the ceiling of the room.

A primary object is to provide simple and effective means whereby a portion of a room may' be illuminated 'properly and whereby pictures may be projected on wall portions of the room by magic lanterns, or similar projecting devices.

Another object of the invention is to prevent interference between illuminating rays and projecting rays by interposition of screens, or simllar opaque elements between the beam of j light utilized for projecting and the beam of light utilized for illuminating the room.

Another object of the invention is to use one single source of light for the projection and for the illumination of the room and to dispose this lsource of light in a fixture which in its outer appearance does not differ f1 om ordinary light fixtures.

'The invention is illustrated in the accompanying drawing, wherein-' Figure 1 represents a sectional view through a light fixture adapted for indirect illumination of a room. Fig. '2 is a perspective view of a modified form of the subject matter of the invention. Fig. 3 is a vertical sectional view of the modification shown 4in Fig. 2. F ig.A 4 is a View illustrated on- 'a small scale, a vertical section of a room with theapparat'us shown in Figs. 2- and 3 installed therein for illuminating and decorating purposes. Fig. 5 is a diagrammatic sectional view of a portion of a room equipped with apparatus of modified construction and arrangement for illuminatingI .a room and for changeably decorating a portionthereof, and Fig. 6 is a plan sectional view of the room and equipment illustrated in Fig. 5.

'The embodiment `of the invention illustrated in Fig. l shows a fixture designated 1n general by the numeral 1. The fixture may be secured to a'portion of the ceiling by the suspension elements 2, or in sorne other suitable way. As it is of importance in the projectlon -of pictures to utilize a relatively small source of light with large intensity, an are lamp 4 is shown to be disposedl within this fixture, preferably in the center portion thereof, and current is supplied to the two electrodes of the lampv byvmeans of the conductors f 3. The fixture comprises two screens 5 and 6, which are held at suitable distance and in concentric relation with re' spect to each other by means of the cylindrical wall 7 of the fixture, or by some other suitable means. Both of the screens are provided with central apertures 8 and 9, and the aperture of the lower screen 5 is covered by a globe-shaped member 10, which maybe of opaque material so that no light emanating from the arc is used for di rect illumination. This globe may also be made of translucent material so that the room receives diffused light fromv the arc lamp 4. When the globe 10 is used for di? fusing the light part of this light will be Y.refracted toward portions of the lower screen 5 and if this portion is of suitable lustrous appearance the light from the screen will be reflected intothe room. In order to prevent that too strong a light should/'loe thrown from the source of light 4 against the wall portionswhich are to receive the decorative projections the upper screen 6 is arranged at a suitable distance from the lower screen. The upper screen 6 preferably has asmaller diameter than the lower screen 5so that the upper screen is not -visible from a. lower portion of the room. The light from the arc lamp will be projected through the openin 8 toward the ceiling, affording there y w at is usually 4termed indirect illumination, an illumina- Vtion which in many ways is preferable to direct illumination. A plurality of magic lanterns 11 are supported 'between the two screens 5 and 6, the tubings holding the optical equipment `of .the lanterns preferably extending in radial directionl from the wall 7. A picture slide 12, showing the desired decoration on arelatively small scale-may be interposed `between the source lof light 4 and the magic lanterns, the picture slides being protected from the intense: heat of the are lamp by perforated shields 13 lof as- 2 g j' y k1,187,443

besas or the iike. when' diffused iight is --transmitted through 4the globe 10'the screenA 5 will cut off the rays of light passing through'the globe so that the upper portion 5 of the room is not illuminated thereby. The modification illustrated in Figs. 2 to l shows a standard 17 supporting the light fixture 18 by means of the brackets 19. The standard also supports a gas pipe 20 throughkwhich"` Vgas'or any other illuminating fuel may be conveyed to the source of light 21 shown in this instance as coinprising a cluster of incandescent gas burners. The rays of light emanating from these `burners in downward direction are difuesd through a globe 22 which is provided with a suitable perforation through which the tubing 20, holding the lamp 21, extends. j In this modification the room is illuminated by direct light diffused through the globey 22. In addition to the'magic lanterns eX- tending radially from the cylindrical wall 7 of this'fxture a magic lantern 23 is provided which projects the decorations shown 25mn' the slide 12 on the ceiling. In this modiication' another screen 24, surrounding the magic lantern '23,- and connected with the wall7 ofthe fixture prevents that light from the lamp 21 should be thrown directly on the ceiling. Fig. 4 illustrates the location of a fixture vof this kind with respect to a room 25. The column 17 preferably is disposed 40 tnuous picture. This may be varied, however, by varying the lenses in the different magic lanterns, or by varying the distance of'f the various lens combinations to produce differentfocusing effects. WhileV the modifications shown above are particularl adapted for central 'position of .theflight Xture withrespectto the room whicli'is to be illuminated and decorated, in 4the[modification shown in Figs. 5 and 6 the ,5 liglit fixtures are arranged in niches or recessesin the vertical walls of the room so as to project pictures 'across the room and uponv the `upper portionsof the opposite wall. In these. gares the niches 26 only are shown land itis to'be understood that a light fixv ture 'comprising ama 'c lantern is disposed withinbthese niches. creens 27 are secured .to the walls 28 of the room adjacent the -entrance 29` tok these niches, these screens .o servingto prevent `the projecting rays-from reaching lower lortions ofthe room. 'The iniches' preferab y have apertures 4Aor lvents 30 throughwhfch the illuminating rays are 'discharged from the nichesv 2 6. '.Iheseillumin'atin'gnrays pass through suitable -of very ornamental appearance; and, when skilfully constructed and arranged, the illusion of permanent wall decorations by means of the picture-projecting apparatus may be readily obtained.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation is to be understood therefrom. It will be understood that artistic as well as mechanical considerations Will enter largely into the design of the combination apparatus, so that the appa- 90 ratus may take a Lmultitude of forms.

What I regard as new, and desire to secure by Letters Patent is 1. Combination picture-projecting and illuminating apparatus, comprising a laterally directed magic-lattern, a globe beneath the plane of the magic lantern, a shieldbe neath the plane of the magic laiitern and f above the globe and beneath which the illul minating rays may pass, and means for 100 lighting the magic "lantern and tlie globe.

2. Combination picture-projecting and yilluminating a paratus', comprising a plurality of magic lanterns'grouped about a vertical axis, an annular screen beneath said lanterns, a depending central globe, and means for emitting light through the lanterns and globe Vfor the purpose set forth. j

3. Combination picture-projecting and illuminating apparatus comprising a'plurality'of magicvlante'rns. an annular shield beneath said lanterns having an upcur-ved outer edge portion concealing the tubes of the lanterns from view, a dependin central v. F globe and light emittin .means a ve the globe and within the circ e of lanterns;

v4. Combination picture Aprojecting and illuminating apparatus! comprising a lurality of horizontally disposed magic anterns an annular shield beneath said lanterns,

another shield abovv the same, andy light emitting means disposed to throw projecting rays throughl the lanterns and illuminating rays.l beneath said first-named shield for the purpose set forth. 125

. 5. In'an apparatus of the character-def scribed, the combinationjofa source` of light, lantern-picturedevices utilizing-rays. from said source o f'light for projectmg pictures .on upright wall portions ofthe room, ad'lt -rays toward the ceiling to secure indirect illumination of the room.

7. yA combination picture-projecting and ,L5 illuminating apparatus, comprising an upperishield and a lower shield which is of larger diameter than the upper shield, magiclanterns disposed in the space between said shields, and light-emitting means adapted' to throw projecting rays through saidlanterns and to throw illuminating rays .into

v the room outside the projection field of the lanterns. In testimony whereof I afix my slgnature in the presence o-I' two witnesses.

ALPHONSE MARIE MUCHA.

Witnesses: I

FELIX STERN,

B. SINGER. 

